A sex-determination system is a biological system that determines the development of sexual characteristics in an organism. Most organisms that create...

The XY sex-determination system is a sex-determination system present in many mammals, including humans, some insects (Drosophila), some snakes, some fish...

The ZW sex-determination system is a chromosomal system that determines the sex of offspring in birds, some fish and crustaceans such as the giant river...

The XO sex-determination system (sometimes referred to as X0 sex-determination system) is a system that some species of insects, arachnids, and mammals...

ZO sex-determination system is a system that determines the sex of offspring in caddisflies and several moths. In those species, there is one sex chromosome...

Temperature-dependent sex determination (TSD) is a type of environmental sex determination in which the temperatures experienced during embryonic/larval...

Haplodiploidy is a sex-determination system in which males develop from unfertilized eggs and are haploid, and females develop from fertilized eggs and...

Environmental sex determination is the establishment of sex by a non-genetic cue, such as nutrient availability, experienced within a discrete period...

sex of an individual is determined through one of several biological sex-determination systems. Most mammalian species have the XY sex-determination system...

systems, their sex determination primarily regulated by MADS-box genes. These genes code for proteins that form the sex organs in flowers. Plant sex chromosomes...

identification. The development of sexual differences begins with the XY sex-determination system that is present in humans, and complex mechanisms are responsible...

the sex differences between males and females from an undifferentiated zygote. Sex differentiation is usually distinct from sex determination; sex determination...

additional diagnostic steps, and deferring sex assignment. In most countries the healthcare provider's determination, along with other details of the birth...

sexual traits. Primary sex determination is the determination of the gonads. In mammals, including humans, primary sex determination is strictly chromosomal...

Sex determination may refer to: A sex-determination system, a biological system that directs the development of sexual characteristics in an organism...

heteromorphic sex-determining chromosomes expressed as XY. It is important to recognize that not all species of Silene have this sex determination system. A few...

ZW sex determination system, in which females are heterogametic (ZW) and males are homogametic (ZZ). This is in contrast to the XY sex determination system...

the XY or the X0 sex-determination system have two X chromosomes and are female. In species that use the ZW sex-determination system, they have either...

fictional organisation in the comic and game XIII XX sex chromosomes, in the XY sex-determination system XX male syndrome, also known as de la Chapelle syndrome...

two sex chromosomes in many organisms, including mammals, and is found in both males and females. It is a part of the XY sex-determination system and...

sex-link rooster ZW sex-determination system List of chicken breeds The Making of Sex-Links - FeatherSite Barry Koffler Sex-Links - FeatherSite Barry...

one of two sex chromosomes in therian mammals and other organisms. Along with the X chromosome, it is part of the XY sex-determination system, in which...

responsible for the initiation of male sex determination in therian mammals (placentals and marsupials). SRY is an intronless sex-determining gene on the Y chromosome...

corresponds to mating or copulation in non-human animals. Synonyms are: vaginal sex, coitus (Latin: coitus per vaginam), (in elegant colloquial language) intimacy...

sex-determination system. In most animals, including humans, sex is determined genetically; however, species such as Cymothoa exigua change sex depending...

of chromosomal sex determination limits opportunities for parental control of offspring sex ratio. However, adaptive adjustment of sex ratio has been...

pair of sex chromosomes. Sex in C. elegans is based on an X0 sex-determination system. Hermaphrodites of C. elegans have a matched pair of sex chromosomes...

Doublesex (dsx) is a gene that is involved in the sex determination system of many insects including the fruit fly Drosophila melanogaster. The gene is...

remains unknown. In species that have males and females, sex-determination may be based on either sex chromosomes, or environmental conditions. Most female...

of sex-determining mechanisms, characterized by the evolutionary transition to genetic sex determination or temperature-dependent sex determination from...